Extension builder estimates (based on hourly rates) to build a single storey extension in NW5
Range from the cheapest single storey extension £46960 (Capital Projects based in NW5) to the dearest single storey extension £50000 (Masters Construction UK based in NW1).
Comparing extension builders estimates for fitting a downstairs toilet gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build a single storey extension in NW5 by posting a job with HaMuch and we will send it to extension builders in NW5.
Estimates for common extension builder jobs in NW5;
| Job | Estimate |
| Underpinning a house | £17397 |
| Build a two storey extension | £87845 |
| Build a timber frame extension | £25897 |
| Install a swimming pool | £80897 |
| Cost to build a single storey extension | £47939 |
| Cost to build a side return extension | £36341 |
| Install an RSJ | £2097 |
| Build an outbuilding | £9897 |
| Build a mansard loft conversion | £51897 |
| Cost of a loft conversion | £32784 |
| Build a kitchen extension | £41897 |
| Build a hip to gable loft conversion | £41897 |
| Build a granny annexe | £86897 |
| Build a garden office | £9897 |
| Convert a garage | £15897 |
| Build a new garage | £18397 |
| Build a flat roof extension | £21897 |
| Build a dormer loft conversion | £41897 |
| Lay a concrete foundation | £6147 |
| Convert a bungalow loft | £28897 |
| Basement conversion cost | £36341 |